Made some horrible mistakes there
First of all, sprite movies are pretty damn easy to make, that's why these days people (and by people I mean me) demand storylines, two characters fighting is a crap story, and highly unoriginal, second of all, your sprites are in GIF format, this highly SUCKS, PNG is alot better to use and your sprites will look clearer too. And last but not least, *ahum*
HOW THE HELL CAN KNUCKLES CHANGE INTO MECHA KNUCKLES!!?!?!?! YOU SUCK FOR MAKING THESE KIND OF MISTAKES!
*ahum* Sorry for that, next time, I would like to see you spend more time working out the details of characters, you COULD let Knuckles turn into Super or Hyper Knuckles, that atleast would make sense.
Good luck making them movies!
-Winegumzero